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Research Journal of Microbiology
  Year: 2008 | Volume: 3 | Issue: 8 | Page No.: 539-551
DOI: 10.3923/jm.2008.539.551
Effect of Biotic and Abiotic Factors on Pathogenic Gram-Negative Bacteria in Lake Qarun, Egypt
S.A. Rabeh and M.F. Fareed

Abstract:
In addition to El-Bats and El-Wadi drains, the main sources of drainage water, six stations were selected and distributed all over Lake Qarun. Total and the most common pathogenic Gram-negative bacteria; E. coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Salmonella choleraesuis, Proteus vulgaris and Serratia liquefaciens as well as actinomycetes were enumerated and identified. Twenty-one actinomycetes were isolated and screened for their antibacterial activities. All actinomycetes isolated were identified as Streptomyces and eleven of them showed antibacterial activities against the pathogenic Gram-negative bacteria isolated from the same tested water sample. The most antibacterial active isolate was subjected to morphological, physiological and biochemical studies and identified as Streptomyces calvus. The antimicrobial activity of the identified Streptomyces calvus against some indicator organisms was also performed. In addition, the effects of some abiotic factors on the tested bacteria were discussed.
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How to cite this article:

S.A. Rabeh and M.F. Fareed, 2008. Effect of Biotic and Abiotic Factors on Pathogenic Gram-Negative Bacteria in Lake Qarun, Egypt. Research Journal of Microbiology, 3: 539-551.

DOI: 10.3923/jm.2008.539.551

URL: https://scialert.net/abstract/?doi=jm.2008.539.551

 
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